wxFoldPanelBar - single fold feature needed

[cai]

Meanwhile I made it work :-)
Like this:

foldbar->Connect(wxEVT_CAPTIONBAR,
                              (wxObjectEventFunction)(wxCaptionBarEventFunction(SymbolSelector::onCaptionPanel)), 

                           NULL, this);

then:

void SymbolSelector::onCaptionPanel(wxCaptionBarEvent &event)
{
    wxFoldPanelItem* mru = foldbar->Item(0).GetItem();
    wxFoldPanelItem* mfu = foldbar->Item(1).GetItem();
    if (mru->IsExpanded())
    {
       foldbar->Expand(mfu);
       foldbar->Collapse(mru);
    }
    else // MFU is expanded
    {
       foldbar->Expand(mru);
       foldbar->Collapse(mfu);
    }
}

My initial mistake was that I was deriving my panels from 
wxFoldPanelItem and tried to catch the EVT_CAPTIONBAR in these custom 
wxFoldPanelItem classes, which did not work.

Regards,

Cristina. 
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